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Three main types of hollow section tube

We’ve listed about five categories of hollow section tube in previous essay. Talking about ERW or seamless steel pipe, hollow pipeline can be divided in three main types for its structure.


They are circular tube, square tube and rectangular tube. You can get the details from the picture below. Of course, for the standard and grade of this tube, we may have four main categories. They are GB, EN, ASTM, and JIS. We are glad to discuss with you for details with your demands for the type you need.